CN116004331A - Combined solvent and application thereof - Google Patents
Combined solvent and application thereof Download PDFInfo
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- CN116004331A CN116004331A CN202211694168.8A CN202211694168A CN116004331A CN 116004331 A CN116004331 A CN 116004331A CN 202211694168 A CN202211694168 A CN 202211694168A CN 116004331 A CN116004331 A CN 116004331A
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- methyl
- pentene
- perfluoro
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- dichloroethylene
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- 239000002904 solvent Substances 0.000 title claims abstract description 54
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 claims abstract description 34
- KFUSEUYYWQURPO-OWOJBTEDSA-N trans-1,2-dichloroethene Chemical group Cl\C=C\Cl KFUSEUYYWQURPO-OWOJBTEDSA-N 0.000 claims abstract description 26
- RMHCWMIZBMGHKV-UHFFFAOYSA-N 1,1,2,3,3,4,4,5,5,6,6,6-dodecafluorohex-1-ene Chemical compound FC(F)=C(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F RMHCWMIZBMGHKV-UHFFFAOYSA-N 0.000 claims abstract description 18
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 5
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 5
- 230000004907 flux Effects 0.000 claims abstract description 5
- 239000002480 mineral oil Substances 0.000 claims abstract description 5
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims abstract description 5
- 229920002545 silicone oil Polymers 0.000 claims abstract description 5
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 5
- -1 (E) -perfluoro-3-methyl-2-pentene Chemical compound 0.000 claims description 45
- FAEGGADNHFKDQX-UHFFFAOYSA-N 1,1,1,3,4,4,5,5,5-nonafluoro-2-(trifluoromethyl)pent-2-ene Chemical compound FC(F)(F)C(C(F)(F)F)=C(F)C(F)(F)C(F)(F)F FAEGGADNHFKDQX-UHFFFAOYSA-N 0.000 claims description 22
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 14
- 239000004519 grease Substances 0.000 claims description 9
- 239000002826 coolant Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 6
- 239000012459 cleaning agent Substances 0.000 abstract description 5
- 238000005476 soldering Methods 0.000 abstract description 3
- 239000011159 matrix material Substances 0.000 abstract description 2
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 230000002522 swelling effect Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 22
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 239000000523 sample Substances 0.000 description 8
- 239000012086 standard solution Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000006116 polymerization reaction Methods 0.000 description 5
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000020477 pH reduction Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- KWHDXJHBFYQOTK-UHFFFAOYSA-N heptane;toluene Chemical compound CCCCCCC.CC1=CC=CC=C1 KWHDXJHBFYQOTK-UHFFFAOYSA-N 0.000 description 3
- 239000012046 mixed solvent Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 239000012496 blank sample Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- ADYYRXNLCZOUSU-UHFFFAOYSA-M potassium;propan-2-ol;hydroxide Chemical compound [OH-].[K+].CC(C)O ADYYRXNLCZOUSU-UHFFFAOYSA-M 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RFPMOTJETISENI-UHFFFAOYSA-N 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7-pentadecafluoro-7-methoxyheptane Chemical compound COC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F RFPMOTJETISENI-UHFFFAOYSA-N 0.000 description 1
- RIQRGMUSBYGDBL-UHFFFAOYSA-N 1,1,1,2,2,3,4,5,5,5-decafluoropentane Chemical compound FC(F)(F)C(F)C(F)C(F)(F)C(F)(F)F RIQRGMUSBYGDBL-UHFFFAOYSA-N 0.000 description 1
- NVSXSBBVEDNGPY-UHFFFAOYSA-N 1,1,1,2,2-pentafluorobutane Chemical compound CCC(F)(F)C(F)(F)F NVSXSBBVEDNGPY-UHFFFAOYSA-N 0.000 description 1
- SXKNYNUXUHCUHX-UHFFFAOYSA-N 1,1,2,3,3,4-hexafluorobut-1-ene Chemical compound FCC(F)(F)C(F)=C(F)F SXKNYNUXUHCUHX-UHFFFAOYSA-N 0.000 description 1
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical group ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- LDTMPQQAWUMPKS-UHFFFAOYSA-N 1-chloro-3,3,3-trifluoroprop-1-ene Chemical compound FC(F)(F)C=CCl LDTMPQQAWUMPKS-UHFFFAOYSA-N 0.000 description 1
- FNUBKINEQIEODM-UHFFFAOYSA-N 3,3,4,4,5,5,5-heptafluoropentanal Chemical compound FC(F)(F)C(F)(F)C(F)(F)CC=O FNUBKINEQIEODM-UHFFFAOYSA-N 0.000 description 1
- 241000592335 Agathis australis Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 150000005828 hydrofluoroalkanes Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Detergent Compositions (AREA)
Abstract
The invention belongs to the technical field of cleaning agents, and particularly relates to a combined solvent and application thereof. The Kb value of the perfluorohexene, gamma-valerolactone and trans-1, 2-dichloroethylene combined solvent provided by the invention is 50-100, which shows that the solvent not only has better dissolving and removing capacity for mineral oil, synthetic oil, rosin soldering flux, organic silicone oil and other organic pollutants, but also has good compatibility with rubber and plastic materials, and does not produce swelling effect on a material matrix, thereby affecting the normal use of electronic devices. When (when)When the combined solvent is a certain amount of perfluorohexene, gamma-valerolactone and trans-1, 2-dichloroethylene, the core parameter flash point thereof>45 ℃ and acid value<0.1ppm, kinematic viscosity<0.5mm 2 The kauri-Butanol value (KB value) is 50-100.
Description
Technical Field
The invention relates to the technical field of cleaning agents, in particular to a combined solvent and application thereof.
Background
Modern microelectronics industry and medical devices are gradually moving toward micro-precision machining, and deep cleaning of these electronics and medical devices becomes a critical process in their machining process. Generally, the devices are cleaned by soaking in an organic solvent, and welding residues, grease and surface residues in the processing process are dissolved and removed. The traditional cleaning solvents comprise halogenated hydrocarbon reagents such as 1, 2-trichloro-1, 2-trifluoroethane, 1, 2-trichloroethylene and the like, and the reagents have excellent cleaning performance, but have strong biotoxicity, environmental hazard and strong ozone layer destructive power, so that the use of the reagents is gradually forbidden in recent years. Trans-1, 2-dichloroethylene has similar cleaning ability as 1, 2-trichloro-1, 2-trifluoroethane and 1, 2-trichloroethylene, extremely low biotoxicity and excellent environmental protection performance, and can be used for replacing the traditional cleaning solvent harmful to biology and environment.
However, trans-1, 2-dichloroethylene has a number of disadvantages when used alone as a cleaning agent. For example, trans-1, 2-dichloroethylene has a flash point of only-11 ℃, and has a certain combustion and explosion risk in the use process; cl in the molecular structure is unstable, and is easy to acidify in the cleaning, storage and transportation process to form trace H + The electronic devices and medical appliances are easy to damage; the molecular structure of the catalyst has C=C double bond, and polymerization reaction easily occurs under the conditions of illumination, heating and the like to generate macromolecular compounds, so that the purity and cleaning effect of the product are affected. The defects greatly restrict the application of the trans-1, 2-dichloroethylene in the fields of electronics and medical instrument cleaning, and how to solve the defects of the trans-1, 2-dichloroethylene at the application end is a key factor for popularizing the application of the trans-1, 2-dichloroethylene.
The prior art mainly focuses on solving the inflammability problem of trans-1, 2-dichloroethylene, namely, the flash point of a compound is improved by adding new components, and the defects of easy acidification and easy polymerization are less concerned. The components to be added are mainly hydrofluoroalkanes (pentafluoroethane, pentafluorobutane, decafluoropentane, etc.), hydrofluoroethers (methyl nonafluorobutyl ether, octafluoropentylether, etc.), hydrofluoroolefins (nonafluorohexene, hexafluorobutene, etc.), hydrochloroolefins (chlorotrifluoropropene, etc.), hydrofluoroolefin ethers (methyl perfluoroheptylether, etc.), etc. Although these techniques can solve the problem of flammability of dichloroethylene, they do not solve the problem of poor stability and easy acidification. On the other hand, the prior art is easy to bring new problems of viscosity rise, cleaning capability change and the like when introducing new components. Such as an increase in the viscosity of the mixed solvent, can affect the flow and wetting of trans-1, 2-dichloroethylene in parts of complex structures (e.g., micro-grooves on circuit boards, etc.), thereby affecting the cleaning effect. The solvent has too high cleaning capacity, which can cause the solvent to swell partial organic components on electronic devices and medical instruments, and influence the normal functions of the devices; the cleaning ability is too low, so that the solvent has insufficient dissolving ability to impurities such as grease and the like, and the cleaning effect is affected.
In summary, the prior art lacks a solution to the problems of flammability, acidification and polymerization.
Disclosure of Invention
The invention aims to provide a combined solvent and application thereof, and simultaneously solves the problems of flammability, easy acidification and easy polymerization.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a combined solvent which comprises the following components in parts by mass:
5-50 parts of perfluorohexene;
0.5 to 5 portions of gamma-valerolactone;
50-95 parts of trans-1, 2-dichloroethylene.
Preferably, the perfluoroethylene comprises one or more of (E) -perfluoro-3-methyl-2-pentene, perfluoro-2-methyl-2-pentene and (Z) -perfluoro-3-methyl-2-pentene.
Preferably, when the perfluoroethylene contains perfluoro-2-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene, the mass ratio of perfluoro-2-methyl-2-pentene to (E) -perfluoro-3-methyl-2-pentene is 20 to 40:60 to 80.
Preferably, when the perfluoroethylene comprises (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene, the mass ratio of (Z) -perfluoro-3-methyl-2-pentene to (E) -perfluoro-3-methyl-2-pentene is 40 to 60:40 to 60.
Preferably, when the perfluoroethylene contains perfluoro-2-methyl-2-pentene and (Z) -perfluoro-3-methyl-2-pentene, the mass ratio of perfluoro-2-methyl-2-pentene to (Z) -perfluoro-3-methyl-2-pentene is 50 to 70:30 to 50.
Preferably, when the perfluoroethylene contains perfluoro-2-methyl-2-pentene, (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene, the mass ratio of perfluoro-2-methyl-2-pentene, (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene is 20 to 40:20 to 40:30 to 50.
Preferably, the composition comprises the following components in parts by mass:
10-40 parts of perfluorohexene;
2-4 parts of gamma-valerolactone;
60-80 parts of trans-1, 2-dichloroethylene.
The invention also provides application of the combined solvent in removing organic grease or serving as a cooling medium of a cooling system of electronic equipment.
Preferably, the organic grease comprises mineral oil, synthetic oil, rosin flux and silicone oil.
The invention adopts the combined solvent containing perfluorohexene, gamma-valerolactone and trans-1, 2-dichloroethylene as azeotrope or approximate azeotrope, and has the advantages of high flash point, high stability, easy flow and proper cleaning capability. Flash point of the combined solvent>45 ℃ and acid value<0.1ppm, kinematic viscosity<0.5mm 2 The kauri-Butanol value (KB value) is 50-100, is a nontoxic, harmless and noncorrosive cleaning agent, can meet the requirements of electronic devices and medical appliances on cleaning and dissolving force, and is a high-efficiency cleaning agent with higher economic value and application prospect.
Detailed Description
The invention provides a combined solvent which comprises the following components in parts by mass:
5-50 parts of perfluorohexene;
0.5 to 5 portions of gamma-valerolactone;
50-95 parts of trans-1, 2-dichloroethylene.
In the present invention, the amount of the perfluoroethylene is 5 to 50 parts, preferably 10 to 40 parts, and more preferably 20 to 30 parts.
In the present invention, the amount of the gamma valerolactone is 0.5 to 5 parts, preferably 2 to 4 parts, and more preferably 2 to 3 parts.
In the present invention, the trans-1, 2-dichloroethylene is 50 to 95 parts, preferably 60 to 80 parts, and more preferably 65 to 75 parts.
In the present invention, the perfluoroethylene contains one or more of (E) -perfluoro-3-methyl-2-pentene, perfluoro-2-methyl-2-pentene and (Z) -perfluoro-3-methyl-2-pentene; when the perfluoroethylene contains two or three of them, the respective substances may be in any ratio.
In the present invention, perfluoroethylene may be specifically the following preferred scheme:
the mass ratio of perfluoro-2-methyl-2-pentene to (E) -perfluoro-3-methyl-2-pentene is 20 to 40:60 to 80, more preferably 25 to 35:65 to 75, still more preferably 30:70;
the mass ratio of (Z) -perfluoro-3-methyl-2-pentene to (E) -perfluoro-3-methyl-2-pentene is 40 to 60:40 to 60, more preferably 45 to 55:45 to 55, still more preferably 50:50;
the mass ratio of perfluoro-2-methyl-2-pentene to (Z) -perfluoro-3-methyl-2-pentene is 50 to 70:30 to 50, more preferably 55 to 65:35 to 45, still more preferably 60:40;
the mass ratio of perfluoro-2-methyl-2-pentene, (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene is 20 to 40:20 to 40:30 to 50, more preferably 25 to 35:25 to 35:35 to 45, still more preferably 30:30:40.
Specifically, (E) -perfluoro-3-methyl-2-pentene is
Perfluoro-2-methyl-2-pentene as
(Z) -perfluoro-3-methyl-2-pentene +.>
The preparation method of the mixed solvent has no special requirement, and the mixed solvent is uniformly mixed.
The invention also provides application of the combined solvent in removing organic grease or serving as a cooling medium of a cooling system of electronic equipment, in particular to organic grease in electronic devices and medical equipment; the organic grease comprises mineral oil, synthetic oil, rosin soldering flux and organic silicone oil.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
At room temperature, a certain amount of perfluorohexene, gamma-valerolactone and trans-1, 2-dichloroethylene are weighed and mixed uniformly to prepare a combined solvent, wherein the type of perfluorohexene in the combined solvent and the mass fraction of each component are shown in the following table 1.
Table 1, types of perfluorohexenes and mass fractions of the respective components in examples 1 to 10
Wherein, the liquid crystal display device comprises a liquid crystal display device,
the mass ratio of perfluoro-2-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene in example 7 was 30:70;
the mass ratio of (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene in example 8 was 50:50;
the mass ratio of perfluoro-2-methyl-2-pentene and (Z) -perfluoro-3-methyl-2-pentene in example 9 was 60:40;
the mass ratio of perfluoro-2-methyl-2-pentene, (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene in example 10 was 30:30:40.
Experimental example
(1) The flash point test is carried out on the combined solvent according to the national standard GB/T21929-2008, 50mL of sample is firstly measured in a test cup, and then the flash point T of the closed cup is tested in an HK-21929A automatic Tagerg closed cup flash point tester Closing the door 。
(2) The acid value of the combined solvent is tested according to the national standard GB/T41633.3-2022, 0.100mmol/L potassium hydroxide isopropanol standard solution is prepared for standby, and 5.00g sample is weighed for dissolutionThe sample and the blank sample were then titrated in 20mL of isopropanol solvent, respectively, in a mertrer-tolidol T5 automatic potentiometric titrator, and the volume V of the potassium hydroxide isopropanol standard solution consumed by the sample and the blank sample, respectively, was recorded 1 (mL) and V 0 (mL), the acid value A of each sample was calculated according to the following formula.
(3) The combined solvents were subjected to a kinematic viscosity test according to standard ASTM D7042, 10mL of the sample was measured in a test cup, and the kinematic viscosity value μ at 40 ℃ was then tested in a An Dongpa SVM1001 fully automatic kinematic viscometer.
(4) The combined solvent was tested for kauri-butanol value KB according to standard ASTM D1133-2002, 400g of kauri-pine was dissolved in 2kg of n-butanol to give a kauri-n-butanol standard solution for use, and 125mL of toluene and 375mL of n-heptane were mixed uniformly to give an n-heptane-toluene standard solution for use. 3 parts of a standard solution of kauri-n-butanol (20 g) was weighed and a standard turbidity card was placed at the bottom. Respectively dripping toluene, n-heptane-toluene standard solution and sample into the 3 standard solutions until the solution is turbid, and recording that the volumes of the added toluene, n-heptane-toluene standard solution and sample solution are V respectively when the turbidity card cannot be observed 1 、V 2 And V 3 The kauri-Butanol value KB of the sample was calculated according to the following formula.
TABLE 2 evaluation results of solvent Properties obtained in examples and comparative examples
As can be seen from the experimental results in Table 1, when the solvent composition is a certain amount of perfluorohexene, gamma valerolactone and trans 1, 2-dichloroethylene, the core parameters have flash points>45 ℃ and acid value<0.1ppm, kinematic viscosity<0.5mm 2 The kauri-Butanol value (KB value) is 50-100.
According to the experimental result of comparative example 1, when the content of perfluorohexene and gamma-valerolactone is too low, the flash point of the combined solvent is less than 45 ℃, and the combined solvent is a flammable solvent; the acid value is more than 0.1ppm, the parts are easy to damage in the use process, and the kauri-Butanol value (KB value) is only 37, which shows that the cleaning capability of the combined solvent is obviously reduced compared with that of the examples.
According to the experimental results of comparative examples 2-4, when the combined solvent contains only perfluorohexene and trans-1, 2-dichloroethylene and no gamma-valerolactone, the solvent is unstable, the acid value of the solvent exceeds 1ppm, and the components are extremely damaged in the use process; its kinematic viscosity>0.5mm 2 S (40 ℃ C.), which means that the flowability of the combined solvent is greatly reduced; the kauri-Butanol values (KB values) are all over 100, which indicates that the combined solvent can swell part of organic matters and damage target matters in the cleaning process.
As a result of the experiment of comparative example 5, when only gamma valerolactone and trans 1, 2-dichloroethylene were present in the combined solvent, the flash point was found to be high in the absence of perfluorohexene<45 ℃ is a flammable solvent; its kinematic viscosity>0.5mm 2 S (40 ℃ C.), which means that the flowability of the combined solvent is greatly reduced; the kauri-Butanol number (KB number) was only 32, indicating a significant reduction in the cleaning ability of the combined solvents over the examples.
In the invention, the perfluorohexene is nonflammable, has no flash point, low viscosity and moderate cleaning capability, and has good wettability and material compatibility; trans-1, 2-dichloroethylene has higher cleaning ability; the gamma-valerolactone can effectively capture free radicals in a mixture system, inhibit polymerization of trans-1, 2-dichloroethylene and reduce the acid value of the trans-1, 2-dichloroethylene. The three substances are synergistic to form azeotrope or near azeotrope, and the obtained combined solvent has stable property, high flash point, low acid value, low viscosity and moderate cleaning capability.
The results of the examples show that the Kb value of the perfluorohexene, gamma-valerolactone and trans-1, 2-dichloroethylene combined solvent provided by the invention is between 50 and 100, which indicates that the solvent has better dissolving and removing capacities for organic pollutants such as mineral oil, synthetic oil, rosin soldering flux, organic silicone oil and the like, has good compatibility with rubber and plastic materials, does not produce swelling effect on a material matrix, and influences the normal use of electronic devices.
Meanwhile, the perfluorohexene, gamma-valerolactone and trans-1, 2-dichloroethylene combined solvent provided by the invention can adjust mass fraction according to different cleaning parts, material compatibility and cleaning force requirements are balanced, and flash points are all more than 45 ℃, so that the combined solvent has good wettability, wide application range and strong applicability.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. The combined solvent is characterized by comprising the following components in parts by mass:
5-50 parts of perfluorohexene;
0.5 to 5 portions of gamma-valerolactone;
50-95 parts of trans-1, 2-dichloroethylene.
2. The combination solvent according to claim 1, wherein the perfluoroethylene comprises one or more of (E) -perfluoro-3-methyl-2-pentene, perfluoro-2-methyl-2-pentene, and (Z) -perfluoro-3-methyl-2-pentene.
3. The combination solvent according to claim 2, wherein when the perfluoroethylene contains perfluoro-2-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene, the mass ratio of perfluoro-2-methyl-2-pentene to (E) -perfluoro-3-methyl-2-pentene is 20 to 40:60 to 80.
4. The combination solvent according to claim 2, wherein when the perfluoroethylene comprises (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene, the mass ratio of (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene is 40 to 60:40 to 60.
5. The combination solvent according to claim 2, wherein when the perfluoroethylene contains perfluoro-2-methyl-2-pentene and (Z) -perfluoro-3-methyl-2-pentene, the mass ratio of perfluoro-2-methyl-2-pentene and (Z) -perfluoro-3-methyl-2-pentene is 50 to 70:30 to 50.
6. The combination solvent according to claim 2, wherein when the perfluoroethylene contains perfluoro-2-methyl-2-pentene, (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene, the mass ratio of perfluoro-2-methyl-2-pentene, (Z) -perfluoro-3-methyl-2-pentene and (E) -perfluoro-3-methyl-2-pentene is 20 to 40:20 to 40:30 to 50.
7. The combination solvent as claimed in any one of claims 1 to 6, comprising the following components in parts by mass:
10-40 parts of perfluorohexene;
2-4 parts of gamma-valerolactone;
60-80 parts of trans-1, 2-dichloroethylene.
8. Use of a combination solvent according to any one of claims 1 to 7 for removing organic grease or as a cooling medium for cooling systems of electronic devices.
9. The use according to claim 8, wherein the organic grease comprises mineral oil, synthetic oil, rosin flux and silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211694168.8A CN116004331A (en) | 2022-12-28 | 2022-12-28 | Combined solvent and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211694168.8A CN116004331A (en) | 2022-12-28 | 2022-12-28 | Combined solvent and application thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000159842A (en) * | 1998-11-25 | 2000-06-13 | Asahi Denka Kogyo Kk | Copolymer and solid surface modifier |
| RU2005114943A (en) * | 2005-05-18 | 2006-11-27 | ФГУП "Всероссийский научно-исследовательский институт химической технологии" (RU) | COMPOSITION FOR CLEANING SURFACES FROM OIL-AND-OIL CONTAMINATIONS |
| US20130090488A1 (en) * | 2010-06-22 | 2013-04-11 | Ulrich Dietz | Device and method for solubilizing, separating, removing and reacting carboxylic acids in oils, fats, aqueous or organic solutions by means of micro-or nanoemulsification |
| US20160244700A1 (en) * | 2013-11-11 | 2016-08-25 | Halliburton Energy Services, Inc. | Removing resin coatings from surfaces |
| US20190241843A1 (en) * | 2018-02-02 | 2019-08-08 | Dov Shellef | Compositions comprising trans-1,2-dichloroethylene and an organic compound, and methods of using the same |
| JP2020055781A (en) * | 2018-10-03 | 2020-04-09 | Ａｇｃ株式会社 | Purification method of trans-1,2-dichloroethylene |
-
2022
- 2022-12-28 CN CN202211694168.8A patent/CN116004331A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000159842A (en) * | 1998-11-25 | 2000-06-13 | Asahi Denka Kogyo Kk | Copolymer and solid surface modifier |
| RU2005114943A (en) * | 2005-05-18 | 2006-11-27 | ФГУП "Всероссийский научно-исследовательский институт химической технологии" (RU) | COMPOSITION FOR CLEANING SURFACES FROM OIL-AND-OIL CONTAMINATIONS |
| US20130090488A1 (en) * | 2010-06-22 | 2013-04-11 | Ulrich Dietz | Device and method for solubilizing, separating, removing and reacting carboxylic acids in oils, fats, aqueous or organic solutions by means of micro-or nanoemulsification |
| US20160244700A1 (en) * | 2013-11-11 | 2016-08-25 | Halliburton Energy Services, Inc. | Removing resin coatings from surfaces |
| US20190241843A1 (en) * | 2018-02-02 | 2019-08-08 | Dov Shellef | Compositions comprising trans-1,2-dichloroethylene and an organic compound, and methods of using the same |
| JP2020055781A (en) * | 2018-10-03 | 2020-04-09 | Ａｇｃ株式会社 | Purification method of trans-1,2-dichloroethylene |
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